In the 21st century, civil engineer Chen Qi traveled through time and became a prisoner who was taken to the border to build the Great Wall. He used modern engineering knowledge to improve the city defense system and accidentally discovered that there were fragments of "soil" that could change the geology buried under the foundation of the Great Wall. Against the grand background of Qin Shihuang's "writings and cars running on the same track", he relied on his engineering skills to rise step by step, and finally stood at the center of power, trying to reshape this huge empire with modern ideas. However, he was inevitably involved in the turbulent waves of the prince's seizure of heir apparent and the restoration of the remnants of the Six Kingdoms.
